Muscles
Muscles are the parts of our bodies that help us move. They are like elastic bands that stretch and contract to make our bodies move in different ways.
Types of Muscles
There are three main types of muscles in our bodies:
- Skeletal muscles: These are the muscles that help us move. When we run, jump, or play, we are using our skeletal muscles.
- Smooth muscles: These muscles are found in our internal organs, like the stomach and intestines. They help these organs work properly.
- Cardiac muscles: These muscles are found in the heart and help it pump blood throughout our bodies.
How Muscles Work
Muscles work by contracting and relaxing. When a muscle contracts, it gets shorter and pulls on the bones in our bodies, allowing us to move. When it relaxes, it goes back to its original length.
Caring for Muscles
It's important to take care of our muscles by staying active and eating healthy foods. Exercise helps keep our muscles strong and healthy.
Fun Fact
Did you know that the strongest muscle in the human body is the masseter, the muscle that helps us chew our food?
[Muscles] Related Worksheets and Study Guides:
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LIFE SCIENCE
Ecosystems: Interactions, Energy, and Dynamics
Obtain information from literature and other media to illustrate that there are many different kinds of living things and that they exist in different places on land and in water (e.g., woodland, tundra, desert, rainforest, ocean, river).